Device for locating inner tubes in molds



March 9,1926, 1,576,101

` M. A. FLYNN DEVICE FOR LOCATING INNER TUBES IN MOLDS Filed Nov, 5,1925 Patented Mar. e, 192s. UNITED STATES i -inermi PATENT o MICHAEL A.LYNN, F AKRON, OHIO.

'DEVICE `FOIE LOCATING INNER TUBES IN Milwo A ppucamu'mea 'november-.5,1925. eer-iai m. eases.

' it may concern:

vBe it knovim that I, MXCHAEL'A. FLYNN, a citizen 4of the United States,anda resident of Akron, county of Summit, State of Ohio,

have' invented certain new and useful Imrovements in Devices forLocating Inner ubes in lMolds, of which the following 1s aspecification.

This invention relates to the manufacture ticula-rly to the manufactureof Vtubes which 4are cured while in circular form in molds and Whileunder internal ressure.

The object of the invention is'to provide a device which wiii operate as'asu port and centering means for the inner tu e so that it may bequickly and accurately placed in the incid. In this way burning orscorching of the tube in spots is prevented. In

addition, the device affords a means for supporting the tube in suchclose relationship to the mold that the connection for the internalpressure can be made before the tube is placed in the mold and may bemade uicker and easier than after the tube is in t e mold.

These and other objects and advantages will be apparent to those skilledin the art to which this invention pertains, it Ibeing understood thatchanges and modifications may be made within the scope of the inventionas set forth in the claims attached hereto.

In the drawinss:

Figure l is a (pian view of a lower or principal tube mol sectionshowing the pla@- in' ring in position and a fragment of a tu e thereon;

Figure 2 is a cross-section on the line 2,*2 of 'iigure l;

figure 3 is a cross-section through the lring with the tube in placethereon; and

15 and is provided with a tube cavity 16l which encircles approximatelythree-quarters of the tube cross-section, the mold being closed by anupper section which is not shown. Heretofore, the workman has insertedthe tube Within the mold unaided by any `devices for locating orcentering the tube, and as a result the operation has been bothlaborious and detrimentai to the tube as portions have contacted the hetmold before the entire tube is seated and the tube has been injured. Bythe use of the present invention, the tube is supportedin partiallyinflated condition upon e. niacin tioning ring which -is provided r ithmeans whereby the ring can be accurately centered so that the tube isconcentric with the mold cavity. The tube is irst connected with thesource of internal, ressure und the workman can then slip t e tube'offthe centerin ring, whereupon it seats accurateiy andy quickly in themoiding'cavity.

Thev ring, which has been referred to, is indicated by the numeral 20,its outer surface being concave in cross-section so that it affords aseat for the inner circumference of the'tube. A series of ings 21 areattached to the inner surface of the ring and iii; over the innercircumference of the incid, as shown in Figure 2, so that 'the tube isac'- Price. ,l

curately centered .vith'respect to the cavity 16. A slot 22 is formed inthe rin which the valve stem passes` the s ot registering with a siot 23in the iovver section of the mold. A. housing or guide plate surroundsthree sides of the siot, and the outer surface of the ring about theslot is flattened, as shown at 25, so that the valve may pass out of therinf. A bar 9.6 extending across the ring affords an easy means ofhandling lt-he ring.

It will be observed that a ready and easi- I ly operated device isprovided for the purposes set forth. Partially iniated tubes may emounted upon rings and placed in the molds as required. The tube isalways as sured of an accurate and careful it and there is no danger ofpinching the tube between the mold sections due to uneven or carelesspositioning of the tube Within the mold.

lVhat is `claimed is:

1. In combination with autube mold having a cavity therein, a ring whichis concave upon its outer surface td provide a seat for the innerperiphery of the inner tube, and means to center the-ring with respectto .the mold with the seat-'therein in alignment'with the mold cavity.

2. In combination with a tube mold having a cavity therein, a ring whichis provided with `a seat upon its outer surface through f vided with" aseat upon its outer upon which a partially inflated unc'ured in'- thepassage of the valvestem# upon which a partially intlated uncured innertube will rest, and means to center the `ring upon, the mold with theinner tube 'over the cavity.

` 3. In combination with a tube mold havin a cavity therein, a ringwhich is pro vi ed with a seat upon its outer surface upon which apartially iniiated uncured inn ner tube will rest, and vmeans to centerthe ring upon l"the mold with the inner tube over the cavit the ring andthe mold having registering s ots to permit the passageof thevalve'stem. I

4. In combination with ya tube moidhaving a Cavity therein, a ringWhich's' prourfa'c'e ner tube. will rest, and meansto center' the ringuponthe mold with the inner tube over the cavity, the ring having aslotto permit `5. A device forpsein lacing inner tubes within molds,`comprising a rin having a transverse s lot `therein and which is pro- Avided upon its outer surface with a concave within molds, comprising aring having a seat for the inner circumference of the tube, and lugsattachedy to the ring by which it may be centered with respect to themold.

8. A device for use in placing inner tubes within molds, comprising aring having a v*seat for the innercircumference of the tube,

a' transverse slot to` permit the passage of the valve stem, and lugsattached to the' ring by which, it may be centered with respect to themold.

7. A device for use in placing inner tubes.

' Marum; l

